On Friday 27 February, Big Think partner PwC hosted its second global webcast focused on the question, ‘What would you do if you were not afraid?’ The webcast was part of ‘Aspire to Lead: The PwC Women’s...

Designers of the new federal system for sending emergency alerts to our cell phones devoted at lot attention to setting up the technical aspects, but not enough to figuring out what the messages should say....

Water for Moonbases?

"Finding useful quantities of frozen water on the moon would have implications for space exploration. Not only would it provide water and oxygen for a manned moonbase, it would also give astronauts a source of hydrogen to use in rocket fuel. Extracting gases from water becomes cost-effective when the amount of ice in lunar soil rises above 1%... At the levels found, astronauts would have to process one cubic metre of lunar soil to get 100 millitres of water, or less than a fifth of a pint." "What we found was...an oasis in an otherwise desert on the moon..."